Bag-tying machine.



L. D. NELSON.

BAG TYING MACHINE. APPLICATION FILED JUNE 24. 1916.

Patented May 22, 1917.

4 SHEETS-SHEET 1.

INVENTOR. Lew/s 0 Ale/son WITNESSES A TTORNE YS.

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Patented May 22, 1917.

4 $HEETSSHEET 2.

L. D. NELSON.

BAG TYING MACHINE.

APPLICATION FILED IUNE24. 191a.

WITNESSES:

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L. D. NELSON.

BAG TYING MACHINE.

APPLICATION FILED JUNE 24. 1916.

Patented May 22, 1917.

4 $HEETS-SHEET 3 Q .2 H s Q T H h s o V E 3 .Q a s & QF 0 o 2 3 3 v 3 J II!!! R. H il E Q g 4 VII/I/l/A INVENTOR. Lewis 0. Nelson fi w WITNESSES: M %M A TTOR NE YS.

IN V EN TOR.

NE YS.

L. D. NELSON.

BAG TYING MACHINE.

APPLICATION FILED JUNE 24, I916:

Lewis 0. Ne lav/1 mu fl ATTOR fication.

LEWIS ID. NELSON, F UNION CI'I'Y, MICHIGAN.

nAG-TYmG MACHINE.

Specification of Letters Patent.

Patented May 22, 1917.

Application filed June 24, 1916. Serial No. 105,615.

To all whom it may concern:

Be it known that I, LEWIS D. NELSON,

citizen of the United States, residing at Union City, county of Branch, State of Michigan, have invented certain new and useful Improvements in Bag-Tying Machines, of which the following is a speci- This invention relates to improvements in bag tyingmachines.

The main 'objectsof this invention are:

First, to provide an improved bag tying machine adapted for the tying of bags with wlre.

Second, to provide an improved bag tying machine adapted for the tying of bags such as are commonly employed for cement and are tied before filling and are filled through valves in the bottoms thereof.

Third, to provide an improved bag tying machine of the character described which is of large capacity.

Fourth, to provide an improved bag tying machine having these advantages which is comparatively simple in structure bodying the features of my invention the wire spools being omitted, and one of the guide members being shown in section.

Fig. II is a plan view of the embodiment of my invention shown in Fig. I.

Fig. III is a vertical transverse section on a line corresponding to line 33 of Figs. I and II.

Fig. IV is an enlarged detail vertical sec tion on a line corresponding to line H of Figs. II and III, showing details of the wire twisting mechanism.

Fig. V is an enlarged detail horizontal section on a line corresponding to line 5-5 of Figs. I, III and IV, showing further details of the wire twisting mechanism.

Fig. V is a detail section similar to that of Fig. V, showing the wire twister retracted.

Fig. VI is a detail section on a line corresponding toline 66 .of Fig. V, showing further details of the wire twister.

Fig. VII is a detail horizontal section on a line corresponding to line 77 of Fig. III, showing details of the feed mechanism.

Fig. VIII is a detail front view showing details of the driving mechanism.

Fig. IX is a detail section on a line corresponding to line 99 of Figs. I and II,

showing further details of the driving mechanism. v

Fig. X is a detail section on a line corresponding to line l010 of Fig. II, showing details of the wire cutter actuating mechanism.

Fig. XI is a detail vertical section on a line corresponding to line 1111 of Figs. I and II, showing details of the twister actuating mechanism.

Fig. XII is a detail view of a modified form of my invention, the modification being an adaptation ofthe same to tie with a single wire.'

Fig. XIII is a detail section on a line corresponding to line 1313 of Fig. XII, showing further details of the modified form of my invention.

Fig. XIV is a detail section similar 'to that of Fig. XIII, with the wire twister retracted and showing another step in the operation of the parts.

Fig. XV is a detail section on a line corresponding to line 1515 of Figs. XIII and XIV.

In the drawing similar reference characters refer to similar parts throughout the several views, and the sectional views are taken looking in the direction of the little arrows at the ends of the section lines.

Referring to the drawing, the main frame, designated generally by the numeral 1, is of suitable design to support the operating parts. A pedestal 2 mounted on'the main frame supports the driving shaft 3 having a pulley 4 at one end and ,a gear 5 at the other. The connections for the various parts to this driving shaft will be pointed out in connection with the description of such parts. One of the bags to be tied is indicated at 6 (see Fig. V).

In the embodiment illustrated the bags are fed to the machine by hand, the necks of the bags being collapsed or folded together and fed between the guides 7 and 8 which are spaced to receive them and provided with longitudinal bores 9 for the tying wires 10, so that as the bags are fed between the guides they are brought between these Wires. The wires are drawn from spools 11 mounted on the arms 12 and 13, the arm 12 being an extension of the guide 7.

At the rear of and spaced from the guides is a holder consisting of a pair of spaced members 14 alined with the guide members. This holder is adapted to receive the bag and support it during the tying operation. The wire twisting mechanism is adapted to reciprocate between the guides and the holder (see Figs. III and V).

The tops of the bags are pushed between the guides 7 and 8 and into the holder by a reel-like feed device 15 having a plurality of radiating arms 16. The outer ends of the arms 16 are forked, as at 17, to embrace or swing over the guides and holder. The feed.reel.15 is mounted on a vertical shaft 18 having a ratchet 19 at its lower end. This ratchet is actuated with a step-by-step movement by means of the oscillating lever 20 pivotally mounted on the shaft 18 and provided with a pawl 21 coacting with the ratchet. The lever is connected by the pit man 22 to a crank 23 on the shaft 2 1. This shaft is connected by the sprocket chains 25 and suitable sprockets to the driving shaft 3 (see Figs. III and VII). A holding pawl 26 is provided for the'ratchet.

With this arrangement of parts the feed mechanism is actuated with a step-by-step movement to carry the bags through the machine and permit the tying operation.

. The wire twisting device, designated generally by the numeral 27, is carried by the slide or carriage28 mounted in a suitable way 29 on one end of the pedestal 2, so-that the twister is reciprocated above the wires and into and from engagement therewith. The carriage 28 is connected by the pitman 30 to. the gear 5. which isprovided with a wrist or crank pin 31 engaging a slot 32 in the pitman. The purposeof this pin and slot connection for the pitman to the gear is to provide .a dwell or stop in the movement of the carriage while it is at its actuated position. i It will be understood that with'the parts in the position shown in Fig. I, in which the twister is in its actuated position, continued rotation of the gear 5 is permitted until the pin 31 passes to the opposite side of the shaft. and again engages the upper end of the slot when it will act toretract the carriage. I

The wire twister preferably consists .of. a disk 33 having a sprocket 3 1 securedthereto. A disk-like journal'35 is disposed between twister thus engaged with the wires it is rotated to twist or tie the same, the twists being shown at 38 (see Fig. V).

The twister is actuated by the sprocket chain 39, one end of which is secured to the drum 40 supported on the stub shaft 41. On

this stub shaft is a second drum 42 for the cable 43 to which the weight 43 is attached so that the sprocket chain 39 is kept taut and is retracted by this weight. The other end of the sprocket chain 39 is passed over a sprocket 44 carried by the oscillating arm 45 pivoted at 46 on the bracket 4:7. The end of the sprocket chain 39 is secured at 18 to a bracket on the frame.

The arm 45 is oscillated from the gear 49 which is connected to the arm by the pitman 50, the gear having a crank or wrist pin 51 for the pitman. The gear 19 is mounted on the stub shaft 52 carried by the bracket 47 and meshes with the gear 5. l/Vith these connections the chain 39 is drawn over the twister sprocket 34 at each complete oscillation. of the arm 45 thereby actuating the twister.

Before the twister is retracted the ties are cut by means of the knife 53 supported in a slide54 to reciprocate across the face of the twister sprocket cutting the wires while they are held thereby. The sprocket constitutes, in effect, one of the shear bars. The knife is actuated by the lever 55 which is pivoted at 56 and slotted at 57 to engage the pin 58 on the knife projecting through the slot 59 in the slideway. (see Figs IV and V). This lever 55 is actuated by the lever 60 which is pivoted at 61 to engage the upper end of the lever 55 andprojects up at the side of the gear 49 to be engaged by the tappet pin 62 thereon- The knife is retracted by the spring 63. V I k With the parts, thus arranged they are actuated in proper sequence or in synchronism to perform their several functions. The operation of the structure. illustrated is as follows:

The wires being threaded from the spools through their guides their ends are secured together, in thefirst instance, at the rear of the guides. The machine is thenstarted and bags fed into the guides to be engaged by the feeder, which carries them between the guides into thebight or loop of the Wireand into the holder 14. The feeder mechanism is timed to come to rest at this point and Sti the twister is timed so that on its downstroke the wires, which are then in the position shown in Fig. V, are engaged in the slots 37. Owing to the connections for the twister carriage to the driving mechanism the twister carriage remains at rest while the twister is actuated to twist the wires, as shown in Figrv. The knife is then actuated, which severs the wires between the twists formed therein at each side of the twister and the twister is then retracted.

The next actuation of the feeder carries another bag into engagement with the bight of the wiresformed by the twist carrying it into the holder and discharging the tied bag from the holder. In the event that no sack or bag is fed to the machine the wire is not drawn to position to be engaged by the twister.

In the modified structure showniin Figs. XII, XIII, XIV and XV, Ihave adapted my improvements to utilize a single wire. The feeding and twister actuating mechanism are the same as in the preferred construction. wire 64: is threaded through the guide member 7. A coacting guide member 65 is provided and constitutes a support forthe wire gripping gears 66 which are arranged to coact with and engage the end 67 ofthe wire 64. In the operation of this device the end of the wire 64 is formed into a loop or bight to receivethe bag, the end 67 being passed between the clutch rollers. The feeder then carries the wire into the holder and the twister forms the twist, as in the structure previously described. The cutter is also the same. After the wire is severed it is drawn through the clutch rollers, as indicated at 68, forming another loop for the succeeding tie.

The gears 66 are driven from shaft 69 which is connected by the shaft 70 to a gear 71 on the shaft 18, This shaft being driven with a step-by-step movement, as described, properly feeds the wire into position to be engaged by the sacks or bags carried into the holders by the feeder, as described.

My improved bag tying machine is very effective in properly tying the bags, is of large capacity and comparatively simple in structure. Means might be provided for automatically feeding the bags, but I find that it is entirely practical to feed them by hand into the guides in position to be engaged by the feeder. The operator puckers or folds the top and slips the puckered top into the guide.

I have not attempted to illustrate or describe certain other modifications which I contemplate as being desirable under certain circumstances, as I believe the disclosure made will enable those skilled in the art to which my invention relates to embody or adapt the same as conditions may dictate.

In this embodiment the single wire-engaging slots therein, a twister carriage mounted to reciprocate between said guides and holder, a wheel on said driving shaft provided with a crank pin, a pitnian connected to said twister carriage and slotted to engage said crank pin so that said carriage is actuated and permitted to dwell in its actuated position during partial revolution of said wheel, means for actuating said twister while said carriage is at rest, and means for severing the wires between the twists formed therein.

2. In a bag tying machine, the combination of a frame, a driving shaft, spaced bag and wire guides, a. holder disposed at the rear of and in a spaced relation to said guides, means for forcing the tops of bags into the bights of the wires and with the wires into the holder, means for actuating said forcing means with a step-by-step movement, a wire twister having spaced wire-engaging slots therein, a twister carriage mounted to reciprocate between said guides and holder, and means for actuating said carriage and said twister.

3. In a bag tying machine, the combination of spaced bag and wire guides, a holder disposed at the rear of and in a spaced relation to said guides, means for forcing the tops of bags into the bights of the wires and with the wires into the holder, a wire twister having spaced wire-engaging slots therein, a twister carriage mounted to reciprocate between said guides and holder, means for actuating said twister, means for actuating said carriage permitting it to rest during the actuation of the twister, and means for se ering the wires between the twists formed therein.

4;. In a bag tying machine, the combination of spaced bag and wire guides, a holder disposed at the rear of and in a spaced relation to said guides, means for forcing the tops of bags into the bights of the wires and with the wires into the holder, a wire twister having spaced wire-engaging slots therein, a twister carriage mounted to reciprocate between said guides and holder, means for ac tuating said twister, and means for actuating said carriage permitting it to rest during the actuation of the twister,

5. In a bag tying machine, the combination of spaced bag and wire guides, a holder disposed at the rear of and in a spaced relation to said guides, means for forcing the tops of bags into the bights of the wires and with the wires into the holder, means for actuating said forcing means with a step-bystep movement, a wire twister, a twister carriage mounted to reciprocate between said guides and holder, means for actuating said carriage permitting the same to rest while the twister is in its wire-engaging position, means for actuating said twister while in such position, and a cutter arranged to sever wires between the twists therein.

6. In a bag tying machine, the combination of spaced bag and wire guides, a holder disposed the rear of and in a spaced relation to said guides, a feed reel having arms forked to swing over said guides and holder and adapted to carry the bags into the bights of the wires and with the wires into the holder and to discharge the tied bags from the holder, means for actuating said feed reel with a step-by-step movement, a wire I twister, a carriage therefor mounted to reciprocate between said guides and holder, means for actuating saidtwister, and a cutter arranged to reciprocate across said twister to sever the wires while they are supp orted, thereby. v

7. In a bag tying machine, the combination of a frame, ashaft, spaced bag and wire guides, a holder disposed at the rear of and in a spaced relation to said guides, feed reel having arms forked to swing over said guides and holder and adapted to carry the bags into the bights of the wires and with the wires into the holder and to discharge the tied bags from the holder, means for actuating said feed reel with a step-by-step movement, a wire twister having spaced wire-engaging slots therein, a twister carriage mounted to reciprocate between said guides and holder, a gear on saiddriving shaft provided with a cr ank pin, a pitman connected to said twister car iage and slotted to engage said crank pin on said gear so that said carriage is actuated and permitted to dwell in its actuated position during a partial revolution of the gear, means for actuating said twister while said carriage is at rest, a cutter arranged to reciprocate across said twister to sever the wires while they are supported thereby, and means for actuatingsaid cutter, i

8. Ina bag tying machine, the combination of a frame, a shaft, spaced bag and wire guides, a holder disposed at the rear of. and in a spaced relation to said guides, a feed reel having arms forkedto swing over said guides and holder and adapted to carry the bags into the bights of the wires and with the wires into the holder and to discharge the tied bags from the holder, meansvfor actuating said feed reel with a step-by-step movement, 'a wire twister having spaced tion of spaced bag and wire guides, a holder disposed at the rear of and in a spaced relation to said guides, a feed reel having arms forked to swing over said guises and holder and adapted to carry the bags into the bights of the wires and with the wires into the holder and to discharge the tied bags from the holder, means for actuating said feed reel with a step-by-step movement, and a wire twister mounted to engage the wires between said holder and guides. p

10, In a bag tying machine, the combina tion of spaced bag and wire guides, a holder disposed at the rear of and in a spaced relation to said guides, means for forcing the tops of bags into the bights of the wires and with the wires into the holder, means for actuating said forcing means with a stepby-step movement, a wire twister having spaced wireengaging slots therein, a twister carriage mounted to reciprocate between said guides and holder, means for actuating said twister, and means for actuating said carriage permitting it to rest while the twister is actuated. 11. In a bag tying machine, the combina tion of spaced bag and wire guides, a holder disposed at the rear of and in a spaced relation to said guides, means for forcing the tops of bags into the bights of the wires and with the wires into the holder, means for actuating said forcing means with a stepb'y-step movement,a wire twister adapted to engage and twist the wires between said guides and holder, and means for severing the wires between the twists formed therein.

12. In a bag tying machine, the combination of spaced combined bag and wire guides, aholder disposed at the rear of and in a spaced relation to said guides, means for forcing thetops of bags into the bights 0f the wires and with the'w'ires into the holder, means for actuating said forcing means with a step-by-step movement, and a wire twister adapted to engage and twist the wires between said guides and holder.

13. In a bag tying machine, the combination of a wire twister comprisinga disk and a sprocket having spaced wire-engaging slots therein, and a disklike,jour11al disposed between said twister disk and sprocket, said sprocket and journal having slots therein registering with the slots in said disk, :1 reciprocatiitig twister carriage having a bearing for said journal disk open at one side, meansior actuating said twister comprising a main courting with said sprocket, means for actuating said car .iage permitting it to-rest during the actuation of the twister, and means rm; severing the wires between the twists formed therein.

14:. In a bag tying machine, the combination ol. a wire twister com n'ising a disk and a sprocket hanxing 109d wire-engaging slots therein, and a disk-like journal disposed lie-twee said twister disk and sprocket, said sprocket and journal having slots therein registering with the slots in aid disk, a reciprocating twister carriage having a bearing for said journal disk open at one side, and means for actuating said twister comprising a chain coacting with said sprocket.

15. In a bag tying machine, the combination of spaced wire guides forming guides for the topv of a bag, awire twister having spaced wire-engaging slots therein, a reciprocating twister carriage, means for actuating said twister, means for actuating said carriage permitting it to rest during the actuation of the twister, and means for severing the wires between the twists formed therein.

16. In a bag tying machine, the combination of a frame, spaced wire and bag guides, a holder disposed at the rear of and in spaced relation to said guides, a wire twister comprising a disk having spaced wire-receiving slots therein, a sprocket, and a disklike journal disposed between said twister disk and sprocket, said sprocket and journal having slots therein registering with the slots in said twister disk, a twister carriage mounted to reciprocate between said guides and holder and having a bearing for said journal disk, open at its under side, means for actuating said carriage permitting it to rest in its actuated position during the actuation of said twister, means for actuating said twister comprising a sprocket chain coacting with said twister sprocket, a drum to which one end of said sprocket chain is connected, 2. weight for actuating said drum, an oscillating arm, a sprocket carried by said arm, the other end of said chain being passed over said sprocket and connected to said frame, a wheel provided with a crank pin, a pitman connecting said crank pin to said oscillating arm, a reciprocating cutter arranged to slide across the face of said twister sprocket and sever the wires while they are supported thereby, a cutter lever, a return spring for said lever, and a pivoted actuating lever for said cutter lever, said arm-actuatingwheel being provided with a tappet pin coacting with said actuating lever.

17. In a bag tying machine, the combina.

tion of a frame, spaced wire and bag guides,

a holder disposed at the rear of and in spaced relation to said guides, a wire twister comprising a disk having spaced wirereceiving slots therein, a sprocket, and a disk- .like journal disposed between said twister disq and sprocket, said sprocket and journal having slots therein registering with said slots in said twister, a twister carriage mounted to reciprocate between said guides and holder and having a bearing for said journal disk, open. at its under side, means for actuating said carriage permitting it to rest in its actuated position during the actuation of said twister, means for actuating said twister comprising a sprocket chain coacting with said twister sprocket, a drum to which one end of said sprocket chain is connected, a weight for actuating said drum, an oscillating arm, a sprocket carried by said arm, the other end of said chain being passed over said sprocket and connected to said frame, and means for actuating said arm.

18. In a bag tying machine, the combination of a frame, a wire twister, a sprocket on said twister, means for actuating said twister comprising a sprocket chain coacting with said twister sprocket, a drum to which one end of said sprocket chain is connected, a weight for actuating said drum, an oscillating arm, a sprocket carried by said arm, the other end of said chain being passed over said sprocket and connected to said frame, a wheel provided with a crank pin, a pitman connecting said crank pin to said oscillating arm, a reciprocating cutter arranged to sever the wires while they are supported by the twister, a cutter lover, a return spring for said lever, and a pivoted actuating lever for said cutter lever, said arm-actuating wheel being provided with a tappet pin coacting with said" actuating lever.

19. In a bag tying machine, the combination of a frame, a wire twister, a sprocket on said twister, means for actuating said twister comprising a sprocket chain coacting with said twister sprocket, a drum to which one end of said sprocket chain is connected, a weight for actuating said drum, an oscillating arm, a sprocket carried by said arm, the other end of said chain being passed over said sprocket and connected to said frame, and means for actuating said arm.

20. In a bag tying machine, the combination of a frame, a wire twister, a sprocket on said twister, means for actuating said twister comprising a sprocket chain meeting with said twister sprocket, an oscillating arm, a sprocket carried by said arm, said chain being passed over said sprocket and connected to said frame, a wheel pro- .vided with a crank pin, a pitman connecting said crank pin to said oscillating arm, a reciprocating cutter arranged to sever the wires While they are supported by the twister, a cutter lever, a return spring for said lever, and a pivoted actuating lever for said cutter lever, said arm-actuating wheel being provided with a tappet pin coacting with said actuating lever.

21. In a bag tying machine, the c0mbination of a frame, a wire twister, a sprocket on said twister, means for actuating said twister comprising a sprocket chain c0acting with said twister sprocket, an oscillatmy hand and seal in the presence of two wit-.

nesses.

LEWIS D. NELSON. [L, s.

Witnesses:

R. M. NEALE, J. H. STRICKLAND.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

